Gubba Bump have RPO stuff for you

[greenergrass]

Gubba Bump if you are still looking for a RPO system to study. Goto X&O Labs. they just put out a 4 section study on the RPO system. Over 145 pages of great stuff. You may need to be a member to get all of it. It only cost I think $40 a year. A lot of great information on everything we do in Football.

http://xandolabs.com/

Good luck